DOI

https://doi.org/10.48717/ccch-6279

Project

RSG09

Title

e-EVN: Test, rsg09, es088b

Abstract

Despite various efforts, efficient observational selection of multiple AGN candidates has so far been elusive. Recently, Satyapal et al. (2017, ApJ 848, 126) proposed a new selection method to find possible dual AGN. They selected galaxies from the Sloan Digital Sky Survey (SDSS) experiencing interactions or mergers according to their optical images. This sample is cross-correlated with the infrared AllWISE catalog (Cutri et al. 2012) to identify those sources where AGN can be present. They employ a colour cut of W1-W2>0.5 to ensure the selection of AGN candidates. They conducted X-ray follow-up observations of selected sources from this sample, where the separation of the assumed AGN can be resolved spatially by the X-ray satellite, Chandra. In their pilot study, four sources from the observed six showed two distinct X-ray components indicating that they possibly host dual AGNs at separations < 10 kpc. Further X-ray observations of Satyapal et al. increased the number of such sources from their sample to nine. We propose a short 2-hour exploratory e-EVN project to check whether J0849+1114 contains a compact radio emitting component, and the check whether J0850+1108 is a suitable phase-reference calibrator. We ask for L-band observation to be able to compare the detected flux density of the target with the low-resolution VLA observations of FIRST and NVSS and judge whether significant radio emission gets resolved out in the e-EVN observation.